Transit Fan Installation Adapter
Upgrade your Ford Transit ventilation setup with the Transit Fan Installation Adapter, designed to eliminate the challenges of mounting a roof fan on the uneven factory roof. This adapter creates a flat, secure mounting surface, allowing you to install a roof fan cleanly and confidently—without fighting roof ribs, bumps, or curvature.
Engineered specifically for 14" x 14" fan openings, this trim ring offers flexible placement along the centerline of the Transit roof, giving you freedom when planning your interior layout. Whether you’re building a weekend adventure van, a full-time vanlife rig, or a professional upfit, this adapter ensures proper sealing, long-term durability, and optimal fan performance.
Constructed from heat- and UV-resistant plastic, the adapter is built to withstand prolonged sun exposure and extreme temperature changes. Designed for seamless compatibility with Maxxair roof-mounted fans, it’s an essential component for any Ford Transit ventilation install.
Key Features
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Designed for Ford Transit Roofs – Accommodates factory roof bumps and structure
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Flexible Mounting Location – Install anywhere along the center of the roof
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14" x 14" Fan Compatibility – Standard opening size for most roof fans
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Creates a Flat Mounting Surface – Ensures proper sealing and airflow
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Durable Plastic Construction – Heat- and UV-resistant for long-term use
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Maxxair Compatible – Perfect for Maxxair roof-mounted fans
What’s Included
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(2) Interlocking L-shaped trim ring pieces
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Assembles into one complete square adapter
Specifications
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Opening Size: 14" x 14"
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Width: 14"
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Height: 14"
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Depth: 6"
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Weight: 17 lbs
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Packed Weight: 7 lbs
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Material: Heat- and UV-resistant plastic
Installation Notes
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Adapter ships as two L-shaped pieces that slot together
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Place over your 14" x 14" roof cutout
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Seal thoroughly using a quality sealant (recommended: Sikaflex 715)
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Ensure all gaps and roof contact points are fully sealed for a watertight install
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Mount the fan using the flat surface created by the adapter
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Longer mounting screws may be required depending on fan model
Shipping Information
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Processing Time: 1–3 business days
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Shipping Time: 1–3 business days
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Packaging: Flat packed for efficient shipping
Compatibility
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Ford Transit Vans
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14" x 14" roof fan openings
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Maxxair roof-mounted fans
Why This Adapter Matters
The Ford Transit roof is not flat, and installing a fan without a proper adapter often leads to leaks, poor sealing, and long-term water damage. The Transit Fan Installation Adapter solves this problem by creating a rigid, level mounting surface that allows your roof fan to seal correctly and perform as intended. Whether you’re a DIY builder or a professional upfitter, this adapter saves installation time, prevents costly mistakes, and ensures your ventilation system is built to last.
